Machine tool control panel

Abstract

The present invention makes the control panel of a machine tool miniaturized. The control panel 2 of the machine tool 1 of the present invention includes a housing 10, a duct member 100, and a fan 200. The housing 10 has an openable and closable door 14, and when the door 14 is closed, the enclosed internal space 40 in which the control device 30 is arranged is closed. The duct member 100 has a groove 120 in which a closed end 121 is closed and an open end 122 is open toward the internal space 40, and a vent 130 that connects the groove 120 and the internal space 40 at a position closer to the closed end 121 than the open end 122, and the groove 120 is fixed toward the inner wall 20 of the housing 10. The fan 200 is arranged at the vent 130. The air Ar of the internal space 40 is driven by the fan 200 and passes through the groove 120 surrounded by the inner wall 20 and the duct member 100.

Description

Technical Field

[0001] The invention relates to a control panel with a closed inner space for a machine tool. Background Art

[0002] The control panel of a machine tool such as a lathe is equipped with a cooling mechanism that prevents overheating caused by heat release from a control device arranged in the internal space. Here, oil mist or the like originating from cutting oil is generated from the machine tool. In order to introduce cooling air existing outside the control panel into the internal space, the external air must pass through a filter that captures the oil mist. However, if the oil mist adheres to the filter, the cooling efficiency decreases, and therefore the filter must be replaced frequently. In addition, when a heat exchanger or a radiator is used as the cooling mechanism, not only is the heat exchanger or the radiator expensive, but the heat exchanger or the radiator appears outside the housing of the control panel, causing the control panel to become larger. Therefore, a cooling mechanism is proposed that uses a fan while not introducing external air into the internal space of the control panel.

[0003] The control panel disclosed in Patent Document 1 comprises: a box-shaped control panel body, in which a control device is installed; a cooling space member, which cooperates with the top plate of the control panel body to form a box-shaped cooling space as a whole above the control panel body; and a side air duct member, which cooperates with the side plate of the control panel body to form a vertical air duct. An exhaust port with a circulation fan is provided on the top plate of the control panel body. The vertical air duct connects the cooling space with the suction port. The air in the control panel body enters the cooling space above the control panel body from the top plate exhaust port, and returns to the control panel body from the suction port again via the vertical air duct.

[0004] [Background Technology Literature]

[0005] [Patent Document]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2003-174275 Summary of the invention

[0007] [Problems to be solved by the invention]

[0008] However, the control board disclosed in Patent Document 1 requires a cooling space to be provided entirely above the control board body, which results in the control board becoming larger in the vertical direction.

[0009] Furthermore, the problems as described above exist in control panels of various machine tools.

[0010] The present invention discloses a technology for miniaturizing a control panel of a machine tool.

[0011] [Technical means to solve the problem]

[0012] The control panel of the machine tool of the present invention has the following form, which comprises: a housing having an openable and closable door, and when the door is closed, a sealed internal space in which a control device is arranged is sealed;

[0013] a duct member having a groove with one end closed and the other end open toward the inner space, and a vent connecting the groove with the inner space at a position closer to the one end than the other end, and the groove is fixed toward the inner wall of the shell; and

[0014] A fan, disposed at the vent;

[0015] The fan is driven to allow air in the internal space to pass through the groove surrounded by the inner wall and the duct member.

[0016] [Effects of the Invention]

[0017] According to the present invention, the control panel of a machine tool can be miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a diagram schematically showing an example of a control panel of a machine tool with its door open.

[0019] Figure 2 It is a diagram showing an example of a duct member provided with a fan.

[0020] Figure 3 This is a cross-sectional view schematically showing an example of a horizontal cross section of the control panel at a position passing through the air blowing fan.

[0021] Figure 4 It is a longitudinal sectional view schematically showing a heat dissipation path of the control board.

[0022] Figure 5 This is a diagram schematically showing another example of a control panel in a state where the door is open.

[0023] Figure 6 This is a diagram schematically showing another example of a control panel in a state where the door is open. DETAILED DESCRIPTION

[0024] Of course, the following embodiments are merely examples of the present invention, and all features shown in the embodiments are not necessarily essential to the inventive solution.

[0025] (1) Technical overview of the present invention:

[0026] First, refer to Figures 1 to 6The examples shown illustrate the technical summary included in the present invention. In addition, the figures of the present application are schematic diagrams of examples, and the magnifications of the directions shown in these figures are sometimes different, so there is a situation where the figures do not match. Of course, the elements of the present technology are not limited to the specific examples shown by the symbols.

[0027] [Form 1]

[0028] A control panel 2 of a machine tool 1 according to one embodiment of the present technology includes a housing 10, a duct member 100, and a fan 200. The housing 10 has an openable and closable door 14, and when the door 14 is closed, a sealed internal space 40 in which a control device 30 is arranged is closed. The duct member 100 has a groove 120 with one end (e.g., a closed end 121) closed and the other end (e.g., an open end 122) open to the internal space 40, and a vent 130 connecting the groove 120 and the internal space 40 at a position closer to the one end (121) than the other end (122), and the groove 120 is fixed to face the inner wall 20 of the housing 10. The fan 200 is arranged at the vent 130. The control panel 2 allows the air Ar in the internal space 40 to pass through the groove 120 surrounded by the inner wall 20 and the duct member 100 by driving the fan 200.

[0029] In the above-described embodiment 1, the opening end 122 of the groove 120 of the duct member 100 is open toward the internal space 40, and therefore, in the direction AX1 of the groove 120, the duct member 100 is shorter than the inner wall 20 of the housing 10. The air Ar of the internal space 40 in which the control device 30 is arranged passes through the groove 120 surrounded by the inner wall 20 of the housing 10 and the duct member 100 by the driving of the fan 200 arranged at the vent 130 of the duct member 100. For example, when the fan 200 sends the air Ar from the groove 120 of the duct member 100 to the internal space 40 via the vent 130, the air Ar of the internal space 40 enters from the opening end 122 along the inner wall 20 of the housing 10 relative to the groove 120 of the duct member 100, flows toward the vent 130, and is sent to the internal space 40 from the vent 130. When the fan 200 draws air Ar from the internal space 40 into the groove 120 of the duct member 100 via the vent 130, the air Ar in the internal space 40 enters from the vent 130 relative to the groove 120 of the duct member 100, flows toward the opening end 122, and is sent to the internal space 40 from the opening end 122 along the inner wall 20 of the shell 10.

[0030] Since the outer wall of the housing 10 is in contact with the relatively low temperature external air, the heat energy of the relatively high temperature air Ar passing through the groove 120 of the duct member 100 is released to the external air via the housing 10. In addition, since the air Ar passes through the groove 120 and the flow velocity of the air Ar increases near the inner wall 20 of the housing 10, the heat transfer coefficient becomes high, and the heat dissipation from the air Ar in the groove 120 to the external air is promoted. Thus, even without using an expensive heat exchanger or radiator, the inside of the control board can be cooled. In addition, in the direction AX1 of the groove 120, the duct member 100 can be shorter than the inner wall 20 of the housing 10. Therefore, in this form, even if the cooling space is not provided above the control board 2 as a whole, the heat can be efficiently dissipated from the control board 2, thereby miniaturizing the control board of the machine tool.

[0031] Here, sealed means closed in a manner that there is no gap through which dust or oil mist passes, and is not limited to completely blocking the air flow between the internal space and the outside. In addition, the sealed internal space in the present technology refers to a space that is open to the outside when the door is open. Therefore, the sealed internal space refers to a space that dust or oil mist does not invade from the outside when the door is closed, and is not limited to a space that is completely blocked from the outside air when the door is closed.

[0032] The groove is open to the inner space, which means that a part of the inner space is located between the inner wall of the housing and the open end of the groove.

[0033] The vent is located closer to one end of the groove than the other end of the groove so that the shortest distance from the one end of the groove to the vent is shorter than the shortest distance from the other end of the groove to the vent.

[0034] In addition, the above-mentioned supplementary remarks are also applicable to the following aspects.

[0035] [Form 2]

[0036] The inner wall 20 may include a bottom portion 21, a top portion 22, and a vertical wall portion 23 connected from the bottom portion 21 to the top portion 22. The duct member 100 may be fixed to at least one of a position of the vertical wall portion 23 closer to the top portion 22 than the bottom portion 21, and the top portion 22. Since the temperature of the air Ar in the internal space 40 of the housing 10 tends to be higher in the upper portion than in the lower portion, if the duct member 100 is fixed at the position, the air Ar in the upper portion of the internal space 40, which tends to be relatively high in temperature, will pass through the groove 120. Therefore, this form can dissipate heat more efficiently from the control board 2, thereby making the control board of the machine tool more compact.

[0037] Here, the duct member is located closer to the top than the bottom, which means that the shortest distance from the top to the duct member is shorter than the shortest distance from the bottom to the duct member. This supplementary statement also applies to the following aspects.

[0038] [Form 3]

[0039] The fan 200 may also include an air supply fan 201 that sends the air Ar from the groove 120 to the internal space 40 via the vent 130, and an air suction fan 202 that sucks the air Ar from the internal space 40 into the groove 120 via the vent 130. The duct member 100 may also include an air supply duct member 101 provided with the air supply fan 201, and an air intake duct member 102 provided with the air suction fan 202. The air intake duct member 102 may also be fixed to the inner wall 20 at a position where the air supply fan 201 and the air suction fan 202 are opposite.

[0040] In the third embodiment, the air Ar in the internal space 40 enters from the opening end 122 relative to the groove 120 of the air supply duct member 101 by the air supply fan 201, flows toward the vent 130, is sent from the vent 130 to the internal space 40, and flows toward the suction fan 202 opposite to the air supply fan 201. In addition, the air Ar in the internal space 40 that flows toward the suction fan 202 enters from the vent 130 relative to the groove 120 of the air intake duct member 102 by the suction fan 202, flows toward the opening end 122, and returns to the internal space 40 from the opening end 122. As a result, a wide circulation flow C1 of the air Ar is generated in the housing 10, and the heat energy of the air Ar in the internal space 40 is released to the outside air via the housing 10 in a wider range. Therefore, this embodiment can dissipate heat more efficiently from the control board 2, so that the control board of the machine tool can be more compact.

[0041] [Form 4]

[0042] The duct member 100 can also be attached to and detached from the inner wall 20. This form can change the position of the duct member 100 according to the control board 2, so that efficient heat dissipation can be performed according to the control board 2. Therefore, this form can make the control board of the machine tool more compact.

[0043] [Form 5]

[0044] The control device 30 may also include an amplifier 32 for driving a driven object. The upper end 200a of the fan 200 may also be located higher than the upper end 32a of the amplifier 32. Since the amplifier releases a large amount of heat, most amplifiers are amplifiers that draw air from below and discharge it from above. For example, when the fan 200 is an air suction fan 202, the relatively high-temperature air discharged upward from the amplifier 32 is sucked into the groove 120 of the duct member 100, and the heat energy of the relatively high-temperature air passing through the groove 120 is released to the outside air via the housing 10. When the fan 200 is an air supply fan 201, the relatively low-temperature air is sent from the groove 120 of the duct member 100 to the top of the amplifier 32, thereby suppressing the relatively high-temperature air from being stagnant above the amplifier 32. Therefore, this form can dissipate heat more efficiently from the control board 2, so that the control board of the machine tool can be more compact.

[0045] (2) Specific example of the structure of the control panel:

[0046] Figure 1 As an example, the control panel 2 of the machine tool 1 is shown in the state where the door 14 is open. Figure 1 This is merely an example simplified for explaining the present technology, and does not limit the present technology.

[0047] The machine tool 1 has a processing section 3 for processing a workpiece, and a control board 2 for controlling the operation of the processing section 3. When the machine tool 1 is an NC (numerical control) lathe, the processing section 3 includes: a spindle table provided with a spindle for holding a workpiece; a tool table for holding a tool for processing the workpiece held on the spindle; a drive section for relatively moving the spindle table and the tool table; and a cutting oil supply device for supplying cutting oil, etc. to the workpiece held on the spindle. The control board 2 includes: a printed circuit board 31 having a circuit including a CPU (Central Processing Unit) or a semiconductor memory, etc.; and a control device 30 such as an amplifier 32 for driving a drive object such as a motor of the processing section 3; and controlling the holding of the workpiece, the rotation of the spindle, the movement of the spindle table or the tool table, the supply of cutting oil, etc. The semiconductor memory includes a ROM (Read Only Memory) or a RAM (Random Access Memory). The control device 30 is arranged in an internal space 40 of the metal housing 10. Heat is generated from the control device 30 operated by power supplied from the outside. In particular, the amplifier 32 generates a large amount of heat to drive the driven object. Therefore, an amplifier that draws air Ar from below and discharges it from above is used in the amplifier 32. In order to discharge the relatively high temperature air upward, a gap is provided between the upper end 32a of the amplifier 32 and the top 22 of the inner wall 20.

[0048] In order to prevent the control device 30 from overheating, the control board 2 includes a duct member 100 provided with a fan 200 as a cooling mechanism. Hereinafter, the duct member 100 provided with the fan 200 is referred to as a duct member 100 with a fan.

[0049] Figure 1 The housing 10 shown has a rectangular bottom plate 11 located below the control device 30, a rectangular top plate 12 located above the control device 30, a rectangular door 14 that can be opened and closed in front of the control device 30, a rectangular back plate 15 located behind the control device 30, a rectangular left side plate 16 located to the left of the control device 30, and a rectangular right side plate 17 located to the right of the control device 30. The back plate 15 and the side plates 16, 17 are located between the bottom plate 11 and the top plate 12, and support the top plate 12. The door 14 is mounted on the left side plate 16 via a hinge, and can be opened by rotating forward with the hinge as the center, and can be closed by rotating backward. When the door 14 is opened, the front surface of the internal space 40 is open, and when the door 14 is closed, the front surface of the internal space 40 is closed. The housing 10 is formed into a box shape by the bottom plate 11, the top plate 12, the door 14, the back plate 15, and the side plates 16, 17.

[0050] Oil mist is generated from the cutting oil in the processing section 3 equipped with a cutting oil supply device. Although the internal space 40 can be cooled by introducing the cooling air existing outside the control panel 2 into the internal space 40, a filter is required to capture the oil mist together with the dust. If the oil mist adheres to the filter, the cooling efficiency decreases, so the filter must be replaced frequently. In addition, when a heat exchanger or a radiator is used as a cooling mechanism for the control panel, not only is the heat exchanger or the radiator relatively expensive, but the heat exchanger or the radiator is exposed outside the housing of the control panel, resulting in the enlargement of the control panel. Therefore, the control panel 2 of this specific example has a structure in which, when the door 14 is closed, a closed internal space 40 is formed such that there is no gap through which dust or oil mist passes. Of course, when the door 14 is opened, the internal space 40 is open to the outside air, and when the door 14 is closed, the internal space 40 is sealed in a manner such that there is no gap through which dust or oil mist passes.

[0051] In addition, the structure of the housing is not limited to Figure 1 For example, a front panel having an openable and closable door may be arranged in front of the control device 30 instead of the door 14 .

[0052] In order to cool the sealed internal space 40, a duct member 100 with a fan is fixed to the inner wall 20 of the housing 10. Here, the inner wall of the bottom plate 11 in the inner wall 20 is called the bottom surface 21, the inner wall of the top plate 12 is called the top 22, and the inner walls of the door 14, the back plate 15, and the side plates 16 and 17 are called the vertical wall 23. The vertical wall 23 is connected from the bottom surface 21 to the top 22. Figure 1The duct member 100 shown includes an air supply duct member 101 fixed to the vertical wall portion 23 in the left side plate 16, and an air intake duct member 102 fixed to the vertical wall portion 23 in the right side plate 17. An air supply fan 201 is provided in the air supply duct member 101, and an air suction fan 202 is provided in the air intake duct member 102. Each duct member 101, 102 is located at a position closer to the top 22 than the bottom surface portion 21 in the vertical wall portion 23.

[0053] Figure 2 1 is an example of the appearance of the duct member 100 with a fan. In addition, the air supply duct member 101 and the air intake duct member 102 have the same shape, and the air supply fan 201 and the air suction fan 202 have the same shape. Figure 2 In the figure, the two duct members 101 and 102 are collectively referred to as the duct member 100 , and the two fans 201 and 202 are collectively referred to as the fan 200 . Figure 3 exist Figure 1 A horizontal cross section of the control panel 2 is schematically illustrated at the location of the blower fan 201 .

[0054] The duct member 100 has grooves 120 through which the air Ar in the internal space 40 flows, and vents 130 in which the fans 200 are arranged.

[0055] The groove 120 of the duct member 100 is formed by an opposing portion 111 and side portions 112 and 113. The opposing portion 111 is opposed to the inner wall 20 of the housing 10, and the side portions 112 and 113 are located at a position sandwiching the opposing portion 111. The duct member 100 further includes a closing portion 114 connected to the opposing portion 111 and the side portions 112 and 113 at one end of the groove 120, and a plurality of mounting portions 115. One end of the groove 120 is closed by the closing portion 114, and the other end of the groove 120 is open to the internal space 40. Here, the closed end of the groove 120 is referred to as a closed end portion 121, and the other end of the groove 120 is referred to as an open end portion 122. The groove 120 being open to the internal space 40 means that the open end portion 122 is opened from the opposing inner wall 20, for example Figure 1 The bottom surface portion 21 is shown separated. Therefore, a portion of the interior space 40 is located between the opening end 122 and the inner wall 20. Figure 2 The four mounting portions 115 shown include two mounting portions located near the closed end 121 and two mounting portions located near the open end 122. The two mounting portions 115 near the closed end 121 include a mounting portion extending from the side portion 112 toward the door 14 or the back panel 15, and a mounting portion extending from the side portion 113 in the opposite direction of the groove 120. The two mounting portions 115 near the open end 122 include a mounting portion extending toward the bottom plate 11 after being bent from the side portion 112 toward the groove 120, and a mounting portion extending toward the bottom plate 11 after being bent from the side portion 113 toward the groove 120.

[0056] The vent 130 of the duct member 100 is formed in the facing portion 111 near the closed end 121 of the groove 120. That is, the vent 130 is located closer to the closed end 121 than the open end 122. The vent 130 connects the groove 120 with the internal space 40.

[0057] The duct member 100 is fixed with the groove 120 facing the inner wall 20 of the shell 10. The groove 120 surrounded by the inner wall 20 and the duct member 100 becomes a passage for the air Ar in the internal space 40. The duct member 100 can be fixed to the inner wall 20 using, for example, screws SC1 (including bolts). In the case of using bolts, for example, through holes for passing the bolts can be formed in advance in each mounting portion 115 and the shell 10, and the through holes of each mounting portion 115 are aligned with the through holes of the shell 10 so that the bolts pass through and are screwed together with nuts, and then the duct member 100 can be detachably mounted on the inner wall 20. In addition, if a screw hole that is screwed together with the screw SC1 is formed in advance in each mounting portion 115, the duct member 100 can be detachably mounted on the inner wall 20 by, for example, screwing the screws SC1 that pass through each through hole of the shell 10 into each mounting portion 115. Of course, the direction of the mounting screw SC1 is not limited to Figure 2 The orientation shown can also be Figure 2 Direction opposite to that shown.

[0058] Figure 1 The duct member 100 shown is fixed to the upper portion of the standing wall portion 23 in a state where the closing portion 114 is separated from the top portion 22 .

[0059] In addition, the duct member 100 may be made of metal or resin. In the case where the duct member 100 is made of metal, the duct member 100 may be fixed by welding each mounting portion 115 to the inner wall 20. In addition, the fixing of the duct member 100 to the inner wall 20 is not limited to screws or welding, and may be fixed using a high heat-resistant double-sided tape.

[0060] A fan 200 is installed in the duct member 100 in a manner covering the vent 130. The fan 200 is driven by powering on. When the fan 200 is driven, the air Ar of the internal space 40 passes through the groove 120 surrounded by the inner wall 20 and the duct member 100 along the direction AX1 of the groove 120. The ventilation direction AX2 of the fan 200 is orthogonal to the direction AX1 of the groove 120. Thus, even if the duct member 100 with a fan is arranged in an invalid space such as a corner in the housing 10, the air Ar flows smoothly. In addition, the ventilation direction AX2 of the fan 200 can intersect with the direction AX1 of the groove 120, or it can not be orthogonal to the direction AX1 of the groove 120.

[0061] At fan 200 Figure 1, 3 In the case of the air supply fan 201 shown, the duct member 100 uses the air supply fan 201 to become an air supply duct member 101 that sends the air Ar from the groove 120 to the internal space 40 of the housing 10 via the vent 130. In this case, the air Ar in the internal space 40 enters the groove 120 of the air supply duct member 101 from the opening end 122, flows toward the vent 130 along the direction AX1 of the groove 120, and is sent from the vent 130 to the internal space 40 in the ventilation direction AX2 of the fan 201.

[0062] At fan 200 Figure 1 In the case of the suction fan 202 shown in the figure, the duct member 100 uses the suction fan 202 to become the intake duct member 102 that sucks the air Ar from the internal space 40 of the housing 10 into the groove 120 via the vent 130. In this case, the air Ar in the internal space 40 flows from the vent 130 along the ventilation direction AX2 relative to the groove 120 of the intake duct member 102, changes to the direction AX1 of the groove 120, and then flows toward the opening end 122, and is sent out from the opening end 122 along the direction AX1 of the groove 120 and returns to the internal space 40. Figure 1 As shown, when the air supply fan 201 and the air suction fan 202 are located at opposing positions, the air Ar is sent from the air supply fan 201 to the air suction fan 202 .

[0063] The outer wall of the housing 10 is in contact with the relatively low temperature external air. Regardless of whether the duct member 100 is the air supply duct member 101 or the air intake duct member 102, the heat energy of the relatively high temperature air Ar passing through the groove 120 is released to the external air via the housing 10. In addition, since the air Ar passes through the groove 120, the flow velocity of the air Ar increases near the inner wall 20 of the housing 10, and thus the heat transfer coefficient becomes higher, thereby promoting heat dissipation from the air Ar in the groove 120 to the external air.

[0064] In addition, if something like Figure 1As shown, when the upper end 200a of the fan 200 is located higher than the upper end 32a of the amplifier 32 (that is, the upper end 200a of the fan 200 is closer to the top plate 22 than the upper end 32a of the amplifier 32), the retention of the relatively high-temperature air discharged upward from the amplifier 32 is suppressed. When the fan 200 is the suction fan 202, the relatively high-temperature air discharged upward from the amplifier 32 is sucked into the groove 120 of the duct member 100, and the thermal energy of the relatively high-temperature air passing through the groove 120 is released to the outside air via the housing 10. Therefore, the fan 200 with the upper end 200a located higher than the upper end 32a of the amplifier 32 is preferably the suction fan 202. However, even if the fan 200 is the blowing fan 201, the relatively low-temperature air is sent from the groove 120 of the duct member 100 above the amplifier 32, suppressing the retention of the relatively high-temperature air above the amplifier 32.

[0065] Furthermore, when the amplifier 32 is fixed to the back plate 15, the position of the fan 200 of the duct member 100 fixed to the side plates 16 and 17 is preferably closer to the back plate 15 than the door 14. If the fan 200 is located at this position, the retention of the relatively high-temperature air discharged upward from the amplifier 32 is further suppressed.

[0066] To promote heat dissipation, it is preferable that the depth L1 of the groove 120 is smaller than the width L2 of the groove 120, and the air Ar in the groove 120 is close to the inner wall 20. In Figure 2 the groove 120 shown, the depth L1 corresponds to the length of the groove 120 in the direction orthogonal to the opposing portion 111, and the width L2 corresponds to the distance between the side portions 112 and 113. The duct member 100 may also be formed such that L1 < L2 / 2, and further L1 < L2 / 3, etc., according to the heat dissipation state of the control board 2. In addition, the depth L1 of the groove 120 is preferably smaller than the diameter D of the fan 200, and the width L2 of the groove 120 is preferably larger than the diameter D of the fan 200.

[0067] In addition, to keep the flow of the air Ar in the groove 120 near the inner wall 20, it is preferable that the length L3 of the groove 120 is larger than the width L2 of the groove 120. In Figure 2 the groove 120 shown, the length L3 corresponds to the length toward the opposing portion 111 on the AX1. The duct member 100 may also be formed such that L3 > 2×L2, and further L3 > 3×L2, etc., according to the heat dissipation state of the control board 2. As Figure 1 shown, the length L3 of the groove 120 is shorter than the length of the standing wall portion 23 in the orientation of the groove 120.

[0068] (3) Functions and effects of the specific examples:

[0069] Next, referring to Figures 1 to 4The functions and effects of the above-mentioned specific examples will be described. Figure 4 The heat dissipation path of the control board 2 is schematically shown.

[0070] Near the air supply duct member 101, the air Ar in the internal space 40 of the housing 10 enters from the opening end 122 relative to the groove 120 of the air supply duct member 101 by the air supply fan 201. The air Ar entering from the opening end 122 flows toward the vent 130 along the direction AX1 of the groove 120. Since the outer wall of the housing 10 contacts the outside air whose temperature is lower than that of the internal space 40, Figure 4 As shown in the heat dissipation direction H1, the heat energy of the air Ar passing through the groove 120 is released to the outside air via the housing 10. Here, the temperature of the air Ar in the internal space 40 is more likely to rise as it goes up, so by fixing the air supply duct member 101 to the upper part of the vertical wall portion 23, the air Ar with a higher temperature passes through the groove 120 of the air supply duct member 101, and the heat energy of the air Ar in the groove 120 is efficiently released to the outside air. In addition, the flow of the air Ar passing through the groove 120 is faster, so the heat is quickly dissipated from the air Ar in the groove 120 to the outside air.

[0071] The air Ar that flows into the vent 130 is sent out from the vent 130 and returns to the internal space 40 in the ventilation direction AX2 of the fan 201. The air Ar that returns to the internal space 40 flows along the top 22 toward the suction fan 202. Figure 4 As shown in the heat dissipation direction H1, the heat energy of the air Ar is released to the outside air through the top plate 12. The temperature of the air Ar in the internal space 40 increases more easily as it goes up, so the heat energy of the air Ar flowing in the upper part of the internal space 40 is efficiently released to the outside air. The air Ar near the air intake fan 202 flows from the vent 130 along the ventilation direction AX2 relative to the groove 120 of the air intake duct member 102, and changes to flow toward the opening end 122 in the direction AX1 of the groove 120. The heat energy of the air Ar flowing in the groove 120 along the direction AX1 of the groove 120 is as shown in FIG. Figure 4 The heat dissipation is directed to H1 and released to the outside air through the right side plate 17. By fixing the air intake duct member 102 to the upper part of the vertical wall portion 23, the air Ar with a higher temperature passes through the groove 120 of the air intake duct member 102, and the heat energy of the air Ar in the groove 120 is efficiently released to the outside air. In addition, the flow of the air Ar passing through the groove 120 is fast, so the heat is quickly released from the air Ar in the groove 120 to the outside air.

[0072] The air Ar returned to the internal space 40 from the opening end 122 of the intake duct member 102 flows downward along the vertical wall portion 23 of the right side plate 17. During this period, the heat energy of the air Ar is released to the outside air via the right side plate 17. Figure 1As shown, the air Ar flowing downward along the upright wall portion 23 of the right side plate 17 eventually changes direction, and when approaching the air intake duct member 102 , enters from the opening end 122 of the groove 120 of the air supply duct member 101 by the air supply fan 201 .

[0073] As described above, a wide circulation flow C1 of the air Ar is generated in the housing 10, and the heat energy of the air Ar in the internal space 40 is released to the outside air via the housing 10 in a wide range. Of course, since the internal space 40 is a closed type, the intrusion of dust or oil mist is suppressed. In addition, in the direction AX1 of the groove 120, the duct member 100 can be shorter than the vertical wall portion 23. Therefore, this specific example does not require an expensive heat exchanger or radiator, and even if a cooling space is not provided above the control board 2 as a whole, heat can be efficiently dissipated from the control board 2, thereby miniaturizing the control board of the machine tool.

[0074] Furthermore, when the duct member 100 is detachable from the inner wall 20, the position of the duct member 100 can be changed according to the control board 2, so that effective heat dissipation can be performed according to the control board 2. Therefore, the control board of the machine tool can be further miniaturized.

[0075] (4) Variations:

[0076] The present invention contemplates various variations.

[0077] For example, the duct member 100 with a fan fixed to the inner wall 20 of the housing 10 may be only the air supply duct member 101 provided with the air supply fan 201, or may be only the air intake duct member 102 provided with the air suction fan 202. In addition, the number of the duct members with a fan fixed to the inner wall 20 is not limited to two, and may be one, or may be three or more.

[0078] In the above embodiment, the duct member 100 is fixed to the standing wall portion 23 with the closing portion 114 separated from the top portion 22 . However, the duct member 100 may be fixed to the standing wall portion 23 with the closing portion 114 in contact with the top portion 22 .

[0079] The position where the duct member with fan 100 is fixed to the inner wall 20 is not limited to the standing wall portion 23 of the side plates 16 and 17 , and may be the standing wall portion 23 of the rear plate 15 , the top portion 22 , or the bottom portion 21 .

[0080] like Figure 5 As illustrated, even if a plurality of intake duct members 102 are fixed to the inner wall 20 , the circulation flow C2 of the air Ar can be generated in the casing 10 . Figure 5 Another example of the control panel 2 is schematically shown in a state where the door 14 is opened. For easy understanding, the control device 30 is shown by a dotted line. Figure 5 The control panel 2 shown is Figure 1 Compared with the control panel 2 shown in FIG. 1 , the duct member 100 with a fan fixed to the vertical wall portion 23 of the left side panel 16 is different. Figure 5 An air intake duct member 102 provided with an air suction fan 202 is fixed to the upper portion of the vertical wall portion 23 of the left side plate 16 shown.

[0081] Near the suction fan 202, the air Ar of the internal space 40 enters from the vent 130 relative to the groove 120 of the intake duct member 102 and then moves toward the opening end 122, and the suction fan 202 is set on the intake duct member 102 fixed on the left side plate 16. At this time, the heat energy of the air Ar flowing in the groove 120 is released to the outside air via the left side plate 17. The air Ar returning to the internal space 40 from the opening end 122 of the intake duct member 102 flows downward along the vertical wall portion 23 of the left side plate 16, and finally changes direction and rises. Near the suction fan 202, the air Ar of the internal space 40 enters from the vent 130 relative to the groove 120 of the intake duct member 102 and then moves toward the opening end 122, and the suction fan 202 is set on the intake duct member 102 fixed on the right side plate 17. The air Ar returned to the internal space 40 from the opening end portion 122 of the intake duct member 102 flows downward along the standing wall portion 23 of the right side plate 17 , and finally changes its direction to rise.

[0082] As described above, the circulation flow C2 of the air Ar is generated in the housing 10, and the heat energy of the air Ar in the internal space 40 is released to the outside air via the housing 10 in a wide range. Figure 5 The control board 2 shown can also efficiently dissipate heat from the control board 2 without a cooling space above the entire board, thereby enabling miniaturization.

[0083] like Figure 6 As illustrated, even if the air intake duct member 102 is fixed to the top portion 22 and the air intake duct member 102 is fixed to the upper portion of the standing wall portion 23 of the back plate 15 , the circulation flow C3 of the air Ar can be generated in the casing 10 . Figure 6 Another example of the control panel 2 is schematically shown in a state where the door 14 is opened. For ease of understanding, the control device 30 is indicated by a dotted line. The air intake duct member 102 fixed to the top 22 has a closed end 121 and an air suction fan 202 near the left side plate 16, and the open end 122 faces the vertical wall portion 23 of the right side plate 17. The air intake duct member 102 fixed to the vertical wall portion 23 of the back plate 15 has a closed end 121 and an air suction fan 202 near the top 22, and the open end 122 faces the bottom surface portion 21.

[0084] Near the suction fan 202, the air Ar of the internal space 40 enters from the vent 130 relative to the groove 120 of the air intake duct member 102 by the suction fan 202, and then moves toward the opening end 122. The suction fan 202 is provided in the air intake duct member 102 fixed on the top 22. The heat energy of the air Ar flowing in the groove 120 is released to the outside air via the top plate 12. Here, the temperature of the air Ar in the internal space 40 is more likely to rise as it goes up, so by fixing the air intake duct member 102 to the top 22, the air Ar with a higher temperature passes through the groove 120. As a result, the heat energy is efficiently released to the outside air. The air Ar returning to the internal space 40 from the opening end 122 of the air intake duct member 102 flows to the right along the top plate 12. During this period, the heat energy of the air Ar is released to the outside air via the top plate 12.

[0085] The air Ar toward the suction fan 202 enters from the vent 130 relative to the groove 120 of the air intake duct member 102 and then moves toward the opening end 122. The suction fan 202 is provided on the air intake duct member 102 fixed to the vertical wall portion 23 of the back plate 15. The heat energy of the air Ar flowing in the groove 120 is released to the outside air via the back plate 15. Even here, the temperature of the air Ar in the internal space 40 is more likely to rise as it goes up, so by fixing the air intake duct member 102 to the upper part of the vertical wall portion 23, the air Ar with a higher temperature passes through the groove 120. As a result, the heat energy is efficiently released to the outside air. The air Ar returning to the internal space 40 from the opening end 122 of the air intake duct member 102 flows downward along the vertical wall portion 23 of the back plate 15 near the vertical wall portion 23 of the right side plate 17. During this period, the heat energy of the air Ar is released to the outside air via the back plate 15. The air Ar flowing downward along the upright wall portion 23 of the back plate 15 eventually changes direction and, when approaching the suction fan 202 of the air intake duct member 102 fixed to the top portion 22 , enters the slot 120 of the air intake duct member 102 from the vent 130 .

[0086] As described above, a wide circulation flow C3 of the air Ar is generated in the housing 10, and the heat energy of the air Ar in the internal space 40 is released to the outside air via the housing 10 in a wide range. Figure 6 The control board 2 shown can also efficiently dissipate heat from the control board 2 without a cooling space above the entire board, thereby enabling miniaturization.

[0087] (5) Conclusion:

[0088] As described above, according to the present invention, it is possible to provide a technology for miniaturizing a control panel of a machine tool in various forms, etc. Of course, the basic operation and effect described above can also be achieved by a technology consisting only of the constituent elements of the independent claims.

[0089] In addition, it is also possible to implement a configuration in which each configuration disclosed in the above examples is replaced or modified and combined, a configuration in which a known technology and each configuration disclosed in the above examples are replaced or modified and combined, etc. The present invention also includes these configurations, etc.

[0090] [Explanation of symbols]

[0091] 1 Machine Tools

[0092] 2 Control Panel

[0093] 3 Processing Department

[0094] 10 Housing

[0095] 11 Bottom Plate

[0096] 12 Top Plate

[0097] 14 doors

[0098] 15 Back Panel

[0099] 16, 17 side panels

[0100] 20 Inner wall

[0101] 21 Bottom

[0102] 22 Top

[0103] 23 vertical wall part

[0104] 30 Control Equipment

[0105] 32 Amplifier

[0106] 32a Upper

[0107] 40 Interior Space

[0108] 100 Pipeline components

[0109] 101 Air supply duct components

[0110] 102 Intake duct components

[0111] 111 Opposite part

[0112] 112, 113 Side

[0113] 114 Enclosed

[0114] 115 Installation

[0115] 120 slots

[0116] 121 Closed end

[0117] 122 Open end

[0118] 130 Ventilation

[0119] 200 Fan

[0120] 200a Upper

[0121] 201 Air supply fan

[0122] 202 Suction fan

[0123] Ar Air

[0124] AX1 slot orientation

[0125] AX2 ventilation orientation

[0126] C1~C3 circulation flow

[0127] H1 heat dissipation direction

Claims

1. A control panel for a machine tool, comprising: A housing having an openable and closable door, wherein when the door is closed, a sealed internal space in which a control device is arranged is sealed; a duct member having a groove with one end closed and the other end open toward the inner space, and a vent connecting the groove with the inner space at a position closer to the one end than the other end, and the groove is fixed toward the inner wall of the shell; and A fan is disposed at the vent; and The fan includes an air supply fan that supplies air from the groove to the inner space through the vent, and an air suction fan that draws air from the inner space into the groove through the vent. The duct member includes an air supply duct member provided with the air supply fan and an air intake duct member provided with the air suction fan, which are separately arranged. The air intake duct component and the air supply duct component are fixed to the inner wall at positions opposite to the air supply fan and the air suction fan. The fan is driven to allow air in the internal space to pass through the groove surrounded by the inner wall and the duct member; and When the door is closed, air in the inner space is circulated, and heat energy in the inner space is released to the outside air through the housing.

2. The control panel of the machine tool according to claim 1, wherein the inner wall comprises a bottom portion, a top portion, and a vertical wall portion connected from the bottom portion to the top portion, and The duct member is fixed to at least one of a position of the standing wall portion closer to the top portion than to the bottom portion and the top portion. 3 . The control panel of a machine tool according to claim 1 , wherein the duct member is attachable and detachable relative to the inner wall.

4. The control board of the machine tool according to claim 1 or 2, wherein the control device includes an amplifier for driving the driven object, and The upper end of the fan is located above the upper end of the amplifier.

5. The control board of the machine tool according to claim 3, wherein the control device includes an amplifier for driving the driven object, and The upper end of the fan is located above the upper end of the amplifier.

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